What kind of medicine is used to dip tomatoes in greenhouses and spray flowers? What is the concentr

Just 20 points, you just want a formula, you are so funny, you can buy dipping anthers on the market, but the real formula will not tell you! I'll teach you a little more!

Greenhouse tomatoes dipped in flowers, spraying flowers commonly used pesticides and precautions:

1. Dip flowers. 1. Dipping flowers are generally commonly used for 2,4-d, but the treatment concentration should be appropriate. The appropriate concentration of 2,4-d is 10-20 ml l.

As the temperature rises, the concentration decreases. The low concentration limit is used in the high temperature season, and the high concentration limit is used in the low temperature season. Since the high concentration of 2,4-d will kill dicots, the concentration should be strictly controlled when using to avoid pesticide damage.

Taking the winter and spring stubble tomato in the solar greenhouse as an example, usually the concentration of 2,4-d used in the first inflorescence is 20 ml L, the second inflorescence is 15 ml L, and the third inflorescence is 10 ml L.

2. At present, the agricultural 2,4-d sold on the market is mainly a low-concentration small bottle of liquid medicine after treatment, and only the amount of water to the water can be used according to the instructions.

3. The treatment method should be reasonable. Because 2,4-d will cause damage to the leaves of tomatoes, so that the leaves shrink, the color is deepened, and the strip-shaped leaves appear, and the growth is slow, so only the flowers can be treated. The most commonly used treatment methods are smearing the peduncle method and dipping the flower method.

1) When using the treatment method of smearing the flower stalk, first add a small amount of red (or other color) pigment to the prepared liquid medicine for marking, and then dip the medicine with a brush, and gently apply a layer of 2,4-d liquid medicine at the bend of the flower stalk, which can also be applied to the stigma of the flower. This method has to be smeared one by one, and the disadvantage is that it is labor-intensive, and the fruit in the same flower spike does not grow neatly, the first fruit is very large, and then decreases in turn, and the ripening period is inconsistent. Therefore, the results are not very satisfactory.

To grasp the timing of wiping, the number of flowers in the early flowering period is small, you can do it once every other day, and the number of flowers in the full flowering period is large, so you should do it once a day. It is also necessary to pay attention to the flowers that bloom on the same day, it is easy to form stiff fruits when treated early, and cracked fruits are easy to form when treated late.

2) The dipping method is to gently press the open flowers into the 2,4-day solution, so that the whole flower is evenly dipped in the 2,4-day solution. After this method is treated, it is easy to cause the fruit spire and form a peach-shaped fruit, and this method is mostly used in the case of insufficient labor, and the effect is not as good as the method of smearing the flower stalk.

Second, spray flowers. You can use a micro-sprayer to spray other safer flower and fruit preservation agents directly on the inflorescence, you can choose tomato (anti-falling element), the concentration is 25-50ml l, 40-50ml l at low temperature, and 25-30ml l at high temperature. It can also be sprayed with 50 times liquid of tomato yield agent No. 2, which is safer.

The main purpose of dipping the flowers is to help pollinate tomatoes. Tomatoes grown in greenhouses cannot be pollinated by insects or wind vectors after flowering, so they need to be pollinated manually to make tomatoes bear fruit. One of the ways to artificially pollinate tomatoes is to dip the stamens of tomatoes in a container containing the liquid medicine.

There are many farmers who build greenhouses in rural areas to grow vegetables, and my family has built arch sheds and greenhouses to grow celery and tomatoes.

In the cultivation of tomatoes, it is necessary to do the work that needs to be done often after the tomato blooms and continues until the endThe main purpose of dipping flowers is to help pollinate tomatoes

After the tomatoes grown in the greenhouse bloom, they cannot be pollinated by insects or with the help of wind media, and if they cannot be pollinated, they will not be able to bear fruitTherefore, it is necessary to pollinate the tomatoes manually in order to make the tomatoes bear fruit

One of the ways to artificially pollinate tomatoes is to dip the stamens of tomatoes in a container containing the liquid medicine.

In the process of dipping tomatoes, it is also necessary to pay attention to the ratio of the liquid medicine, and also pay attention to the liquid medicine when dipping the flowers as much as possible not to drip on the leaves of the tomato, so as not to affect the growth of the leaves of the tomato.

Secondly,Frequent tomato dipping flowers will also lead to too much hormone in tomato plants due to excessive dosage, resulting in poor growth of tomatoes.

Therefore, tomato dipping flowers usually have to combine dotting flowers and spraying flowers, dotting flowers can reduce the adverse effects of dipping flowers on tomatoes, but dotting flowers is more labor-intensive and time-consuming, and the work efficiency is low.

In addition, there are often omissions in the flower quilt or delays in the operation time, which will adversely affect the quality of the tomato fruit.

Comparatively,The efficiency of spraying tomatoes in greenhouses is high, and the concentration of spraying liquid also needs to be mastered, too concentrated or too low concentration will be unfavorable to tomato fruit settingIf the concentration is too low to achieve the effect, too concentrated will cause deformed fruits.

Therefore, the ratio of liquid medicine must be well controlled. Secondly, alsoBe careful not to spray the petals on the back of the flower

In terms of temperature,The most suitable growth temperature for tomato dipping flowers is 20 25, and it cannot bloom when it is lower than 15, or the pollination solution is not well fertilized, resulting in physiological disorders such as flower fall.

Summary] My family has planted tomatoes in the greenhouse for 3 years, and its work is very cumbersome, not only the work of dipping flowers, but also fertilization, watering, spraying, controlling temperature, humidity, etc., all need to be comprehensive, and can catch up with the market.

Therefore, the income from planting tomatoes in greenhouses is still considerable, and it is difficult to say if there is bad weather.

Greenhouse tomatoes can be sprayed (pollinated) on cloudy days.

Tomato (tomato) rock loss pollination method.

There are generally three types of tomato pollination, spray flowers, spotted flowers and bee vectors. These three methods of tomato pollination are the three most common methods for growing tomatoes in greenhouses. Each of these three methods has its own advantages and disadvantages.

The first method, greenhouse planting tomato pollination can take spray flowers. At present, the majority of tomato growers around the country in pollination, most of the favorite is to take the spray flowers, the advantage is that the use time of the liquid is short, the pollination efficiency is high, the operation is convenient, it is not easy to leak spray, the dosage is relatively uniform, and the pollination effect is good. In general, the agents used are 2,4-d, naphthalene acetic acid, indole butyric acid, etc., and the most commonly used is 2,4-d, which has the best pollination effect.

When using, it is necessary to pay attention to the temperature changes in the greenhouse. The temperature in the greenhouse in spring is relatively low, when the temperature is lower than 8, try to postpone it backwards, so that the temperature rises when the flowers are sprayed, otherwise, the pollination effect of tomatoes is poor, and there will be deformed fruits, which will affect the quality of tomatoes. When the temperature is too high, take ventilation and cooling, and then spray flowers, which can improve the pollination effect, and at the same time reduce the concentration of the liquid medicine, you can increase the water per watering can from 8 catties to more than 10 catties, the higher the temperature, the concentration of the liquid medicine should be lowered.

This reduces fruit cracking and malshapedness. At a normal temperature of about 20, it is possible to prepare the pharmaceutical agent according to the manufacturer's guidance.

The second method, greenhouse planting tomato pollination, can take point flowers. In the past, tomato growers generally adopted the method of using a brush to promote the pollination of tomatoes, the advantage is that it is easy to miss the nucleus, the speed of dotting is slow, the use of the liquid medicine is long, and the pollination effect decreases after a certain time. The agent for pollination of tomato dot flower is generally 2,4-d, and the liquid can be prepared according to the manufacturer's guidance.

In the process of using liquid medicine to point flowers, it is necessary to pay attention to the change of temperature, do not point flowers at low temperatures, and cool down and lower the concentration of flower anthers at high temperatures. In this way, the deformed fruit of tomatoes can be avoided, the degree of pollination can be improved, the quality of tomatoes can be enhanced, and the yield can be increased.

The third method is to use bee vectors for pollination of tomatoes planted in greenhouses. Bee vectors use bees, butterflies and other insects to pollinate tomatoes. The benefits of honey pollination are high pollination efficiency, which can reduce the use of pesticides, reduce the investment of pesticides and manual pollination time, and reduce the cost of planting.

The biggest disadvantage is that bees are coarse in low and high temperatures, and will not leave the nest and cannot complete the pollination task. Tomatoes should often use various insecticides and fungicides to control pests and diseases, which is a great threat to bees and other insects, and is prone to seed poisoning.

The spotting hormone (dichlorophenoxyacetic acid) should be used for tomato spotting in greenhouses, and the concentration is related to the temperature in the shed. When the temperature is higher than 15, use 10 milligrams of pesticides, that is, 1 14 drops of the original liquid added to 1 kg of clean water, and shake well. When the temperature is lower than 15, use a concentration of 15 milligrams, that is, 18 19 drops of burning clothes in 1 kg of water, and shake well.

Add some more red pigment to mark it. In order to prevent the spread of diseases such as gray mold during the dipping or coating process, add 50% Sukrin or Nonrilin to the preparation of 2,4-day dilute release solution, and then soak all the flowers into a wet one.

Expert reminder: The medicine prepared on the same day is used on the same day, and the use time is carried out at 8 10 o'clock and 15 17 o'clock, and it is strictly forbidden to order flowers under the scorching sun. Do not drop the liquid medicine on the stems and leaves, let alone spray, otherwise the skin will be easy to produce deformed fruits.

<> tomato cultivation techniques.

Plot selection. You should choose deep soil, good drainage and irrigation, good ventilation and ventilation, and do not plant nightshade vegetables within 2 to 3 years, and do not choose areas without irrigation facilities for cultivation.

Breed selection. Choose varieties that are disease-resistant, high-quality, high-yield, resistant to storage and transportation, have good commerciality, and are suitable for market demand, such as Jintiewang.

Sowing seeds and raising seedlings. Sowing time in early March to early April is appropriate, according to the actual local situation reasonable arrangement of sowing time, the use of fertilizer balls for mulch film and small arch shed seedlings, and with the well-rotted farmhouse fertilizer mix evenly after pinching into a fertilizer ball of about 5 cm, and put a seed, evenly arranged with nutrient soil.

Mulching, while applying a runny stool water, cover with mulch. Finally, it was covered with a small arch that was 8 meters wide and 8 meters long.

When there are 3** leaves growing, it is necessary to remove the film in time to ventilate and cool down, and carry out seedling training, a week later.

Colonization is carried out again.

Colonization management. Soil preparation and application of base fertilizer: 15 to 20 days before planting, apply 7 to 8 square meters of well-rotted high-quality circle fertilizer per mu, or 5 to 6 square meters of livestock and poultry will be stacked and fermented with the same amount of crop straw and then applied 100 to 150 kg of rotted cake fertilizer, using east-west high ridges.

If the greenhouse is cultivated 20 days before planting, the greenhouse is covered with film, and after the film is buckled, the bottom water is filled with ditching to irrigate the soil.

Planting method and density: plant spacing is kept at 50 to 60 cm, row spacing is kept at meters to meters, and 2000 tomato seedlings per mu are planted. Meanwhile, after 4 p.m. on a sunny day or on a cloudy day.

The planting is better, and the planting water should be watered thoroughly in time after planting, 3 to 5 days later.

Water the seedlings again 1 time.

Field management. Erection and pruning: when the tomato plant is about 30 cm high, it should be tied to the vine in time, and the "human" herringbone bracket is mostly used to erect the scaffold, and after the bracket is laid, the tomato trunk is fixed on the bracket with a plastic rope in the shape of an inverted figure 8, and a single stalk is used for pruning, each plant retains 5 to 6 spikes of flower spikes, and each spike retains 4 to 5 fruits.

In particular, it is necessary to remove the excess side branches in time and remove deformed fruits, diseased fruits, and excess fruits. In the later stage of growth, the old leaves and diseased leaves of the lower part should be removed in time to reduce the consumption of lead transportation and the spread of diseases, and enhance ventilation and light transmittance.

Cultivating weeding and cultivating soil: tomato seedlings can be cultivated and weeded after slowing seedlings, cultivating must be shallow and not hurt the roots, at the same time, remember that the tomato should be cultivated 2 to 3 times during the whole growth period.

Fertilizer and water management. Drip irrigation or dark irrigation should be used for watering, and the seedlings should be watered in time after planting, and the beam seedlings should be watered after 3 to 5 days. The relative moisture of the soil is maintained at 60 to 70 percent in spring and 75 to 85 percent in summer and autumn.

Top dressing in time according to the length of the growing season and growth conditions. After deducting the basal fertilizer part, it is applied with water several times. It is worth noting that it is necessary to resolutely put an end to the use of organic fertilizers that have not been harmlessly treated, and it is advisable to use oil cakes and various biological fertilizers.

When the soil surface is dry, water it, and spray the leaves a few times every morning to spray it.

1. Temperature management. The temperature in the shed should not be too high, no more than 30 degrees Celsius during the day, and the temperature of 35 degrees Celsius in summer will affect the flower bud differentiation of tomatoes for more than 2 hours, and the night temperature is generally 12 to 18 degrees Celsius, especially at night, the temperature should not be too high, otherwise there will be a situation where the stalks will grow and flowers will fall. The temperature in the greenhouse can be reduced by spraying clean water in the shade, choosing the noon shade on a sunny day, spraying water every 1 to 2 days to reduce the temperature in the greenhouse, and with the decrease in temperature, it will gradually sit down the flowers.

2. Spray growth regulators. Foliar spraying can be carried out with boosterin, or acupuncture application with dwarf Fengling, that is, burrowing around the seedlings and putting dwarf Fengling into the hole, which can control the growth of tomatoes and make the stems of tomatoes thicker and stronger. It should be noted that the dosage should not be too large, you can do a test first, such as 2 to 1 sprayers can be used first, and then decide the dosage according to the specific situation, if the dosage is too large, the tomato plant will grow slowly for a long time.

At the same time, you can choose to spray in the afternoon on a sunny day, so that the effect is better, and it is not easy to cause pesticide damage.

3. Remove the leaves. Some of the vigorous leaves can be removed to adjust the growth of tomatoes.

4. Supplement calcium boron foliar fertilizer. In the case of calcium deficiency caused by rapid growth of plants or too high temperature, which leads to rapid evaporation of water, etc., will lead to insufficient absorption of boron and calcium by crops.

5. The use of anthers. In the case of high temperature, the concentration of anthers can be appropriately reduced, that is, the same medicine can increase the amount of water appropriately, which can promote flowering and fruit set.